Demountable rim.



P. J. MUGULLOUGH.

' D EMOUNTABLE RIM. l 4 1 APPLICATION FILED .111.11.22, m0. 984,833, v v Patented Feb. 21, 1911.

s SBEBTS-SHBBT 1.

ll'lllll P. J. MGCULLOUGH. DEMOUNTABLE RIM. AP1LI0ATI0N FILED 11111.22, 1910.

3 SHEETS-SHEET 2.

Patented Feb. 21, 1911 3 BHBETS-BHEBT 3.

.To all 'whom 'fit may` concern:

Pen-L J. MGCULLOUGH, or sfr. LoUI's, MIssoURI.

DEMOUNTABLE RIM.

Specification of Letters'Patent.

Patented Feb. 21, 1911.

I Application led January 22, 1910. Serial No. 539,478. v

Be it known that I, PAUL J. McCULLoUGH, a citizen of the-United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Demountable Rims, of which the following is afull, clear, and exact description, such as will enable others skilled in theart to which rit appertains to make and use the same.

This invention relates to demountable rims for vehicle wheels.

One object of myinvention is to provide a demountable rim that 'can be removed easilyA from the wheel on which it is used.

Anotherobject is to provide a demountable rim of improved construction which is` spaced away slightly from the fixed rim of the wheel so that it' cannot rust on said fixed rim or become connected thereto in `such a manner that itcannot be removed easily.

Another object is to provide a dempunt-A able rim of simplev construction thatris securely locked to the wheel on which itis used. y And still another object is to provide a demountable rim structure that can be applied with very little-trouble to ordinary vehicle wheels or wheels that were origi-l ployed for adjusting the demountable rim circumferentially of the fixedl rim of the I wheel and locking it thereto, Fig. 5 being a vertical sectional viewrtaken on approximately the line 5-5 lof Fig. 3, and Fig. 6 being a top plan view of the parts shown in Fig. 5; Fig.I 7 is a perspective view of the "guard plate or cover that is arranged over 'the adjustingplates 'on the demountable rim and on the fixed rim of the wheel; Fig. 8 is 4a perspective view of the locking device that cooperates with'sa1dadjust1ng plates; Fig. 9 is a vertical sectional View Fig. 1l is'aperspective view of a portion of the metal band. that forms part of the fixed rim of the wheel; Fig. l2 is an enlarged vertical sectional view of the continuous tire'lug that forms Ipart of the means for clamping the outer casing of the pneumatic' tirev in operative position; and Fig. 13 is a sectional view taken on approximately the line 13-13 of Fig. l2. y

Briefly described, my yinvention consists in a demountable rim that is adapted to be slipped over the fixed rim of a vehicle wheel,

cbperating means on said demountable rim and on the fixed rim ofthe wheel for preventing said members from moving laterally relatively to each other, means of improved design for enabling the demountable rim to be' adjusted circumferentially of the fixed rim, and means for securely locking said demountable rim in adjusted position.

The ldemountable rim herein shown is equipped with a quickly detachable pneumatic tire but I wish it to be understood that it is immaterial sofar as my broad idea is concerned 'what kind of tire is mountedP on the rim for the rim can be used with various'other types of pneumatic tires that are A'now in general use. Furthermore; the particular construction of the wheel on which the demountable rim is'used is immaterial so faras my broad idea is concerned, and while I' have. herein shown a wheel having a .metallic rim that surrounds a wooden telly, it will, of course, beunderstood that thev demountable rim could 4loe used 011 various other types of wheels'.

Referring to the drawings which illustrate the 'preferred form of myinvention, A designates a ringshaped metallic demountable rim that `is adapted to be slippedA over the fixed rim 1 which surrounds the felly 2 of the wheel. Said rim A. is enough' larger than the fixed rim l that it will be spaced 'away therefrom when' it is arranged in oper- Iative position, as shown 1n Fig. l, and thus eliminate the possibility'of the demountable rim rusting on the fixedy rim or becoming connected thereto in such a manner that it I. cannot be removed easily. Means is provided for preventing the demo'untable rim from moving laterally relatively to the wheel and alsoor causing said rim to be placed under tension when it is adjusted or moved l circumferentially of the wheel, and in the construction herein shown said means conculnferentially of the wheel.

sists of a plurality of transversely extending ribs or plates B on the inner surface of the rim A that are provided with lugs 3 which are adapted to project into recesses in the fixed rim l on the felly of the wheel. The fixed riin l is provided on its out-er surface with a number of transversely extending grooves or slots 4 that receive the ribs or plates B on the vinterior of the demountable rim when said rim is slipped over said fixed rim, and each of said grooves communicates with a recess v5 that is adapted to receive the lug 3 on the plate B that cooperates With said groove when the rim A .is adjusted cir- The outer end or front end of each of the grooves Il into which the lug 3 is introduced in the operation of arranging the demountable rim in operative position, is deeper than the inner end of said groove, as shown in Fig. 11, and the bottom of the recess 5 that branches laterally from said groove and which receives the lng when the rim A. is adjusted in proper position. is inclined upwardly, as shown in Fig. fl. The upper edge of one of theside walls of the groove 4 is rounded off at da, as shown in Fig. 11, so that when the rim A is moved circumferentially, as here.

. inafter described, the plate B that lies in said `groove will ride upwardly out of the groove and onto the periphery of the fixed rim 1 on the felly of the wheel. The circumferential movement that is imparted to the rim A causes the lugs 3 to enter the recesses 5 and thus lock the demountable rim securely against lateral'movement, and the movement of the plates B upwardly onto the periphery or outer surface of the fixed rim causes the demountahle rim to he clamped tightly thereon. In other words, the plates B act as wedges which force the rim A away from the fixed rim of the wheel and thus place said demountable rim under tension so that it exerts a yielding clamping pressure on .tile fixed rim of the wheel. One of the chief advantages of such a construction is that the demountable rim can be removed easily owing to the fact that the inner surface of said rim is spaced: away slightly from the outer surface of the fixed rim so that said parts cannot rust together as would be apt to occur if the demountable rim embraced the fixed rim snugly throughout its ent-ire cir cumference.

-Another advantage is that the demountable rim cannot rattle. as said rim is under tension and exerts such a powerful yielding clamping pressure on the fixedv rim of the wheel that said parts are as securely con nected together as if the demountable Arim had been shrunk onto the fixed rim. And still another advantage is that the demountahle rim is so securely locked to the wheel that it cannot. move laterally relatively thereto.

If desired, the plates B on the interior of the rim A can be provided at one end with L-shaped legs 6 that project under the fixed rim l and thus eliminate' the possibility of the lugs 3 jumping out of the recesses 5 in case the rim A should spring. I have found, however, that these inwardly projecting L- shaped legs arenot absolutely necessary for if the demountable rim is properly designed it will be impossible for it to spring sufficiently to withdraw any of the lugs 3 from their coperating recesses. Consequently, I do not Wish it to be understood that my invention is limited to plates B ofthe construc- The means that I prefer to use for effecting the circumferential adjustment of the de mountable rim consists of coperating perforated plates 7 and 8 on the felly 2 of the wheel and on the inner surface of the rim A, respectively, and a tool or device T that is adapted to be inserted in alining openings in.

said plates so as to exert a prying action on said plates and thus cause one plate to move longitudinally of the other plate. In the construction herein shown the plate S on the rim A is provided with a plurality of openings 8a arranged in longitudinal alinement with each other and spaced a certain distance apart, and the plate 7 is provided with a plurality of openings 72l that are spaced farther apart than the openings in the plate ,8. The walls of the openings in both plates taperslightly, as shown in Fig.

4, so that the ends of the openings into which the tool T is inserted will he of greater" diameter than the opposite ends of said Openings and thus permit the tool to be canted during the operation of moving one plateupon the other. The tool T that I prefer to use for adjusting the plates has an arm t that is bent at an angle relatively to the handle or shank of the tool, and in the operation of adjustingsaid plates said arm is inserted into the two openings at the lefthand ends of the plates 7 and 8 which nearly aline with each other', and the shank or handle of the tool is then pressed downwardly so as to cant the arm z5" and thus cause the plate 8 and the demountable rim connected thereto to move longitudinally or circumferentiallv of the plate 7 andA Vthe fixed rim of the wheel. This will bring the next two openings-in the plates into approximate alinenieiit with each other or close enough together to enable thearni of the tool to be inserted in said openings, and

`when the handle'of the tool is again depressed tlie demountable rim will'move aA4 triie farther aroundA the iixed rim. This operation is repeated until the demountable rim is securely clamped on the fixed rim, the openings in the-plates? and S being so arranged that the demountable rim will be clamped securely by the time the two openings in the rightliand ends of the plates reoister with each other, as shown in Fig. o.' lVhile I have lierein'stated that the plate is thereafter slipped over the plates 7 and S and a locking device 10 is inserted in the registering openings in said platesl so as to securely lock the rim A in its' adjusted position, the guard plate heilig provided with an opening 9a through which the locking device 10 passes. In view of the fact that the guard plate-9 cannot be'arranged i'n operative position until after `the plates 7 and 4S havebeen adjusted into perfect alinenient with each other, it will be impossible for a careless operator to4 assemble the parts' of the structure if the rim A has not been.l

moved or adjusted circumferentially into' its proper position.- The locking device 10 is preferably carried by a cap-plate 11L which embraced t-lie felly of the wheel, 'and said cap-plate is provided with an opening'lla for receiving the valve stein 12 ofthe pneumatic tire that is used on the wheel, said cap-plate being clamped against the felly by means of a nut 13 mounted on the valve stem 12 underneath `the removable cap 14 for .said stem. The openino' in the felly through which the valve stem 12 passes is elongated, as shown in broken lines in F ig. (i, so as to provide for the circumferential movement of the rim A, and a portion of the side wall of said opening is cut away, as shown in F ig. 3,` so as to enable the valve stem to bc inserted in saine easily during the operation of arranging the demo'untable rim in operative position. l

rThe outer-casing 15 of the tire is retained in position by means of a continuous tire lug C which clamps the beads 16 on the edges of said outer casing against the beadengaging devices 17 on`the rim A. This tire lug C is not retained in position by means of devices tliatrproject through the rim A and through the fixed rim of the wheel, such as in the structures that are now in general use, and consequently said tire lug does not interfere with the removal of the demountable rim or the placing of' said rim in operative position'. In fact, there no direct connection between said tire lug and the rim A, said' lug being mounted loosely upon the rim.

The continuous tire lug C can either consist of a one-piece ring-shaped member or of a split ring-shaped member that has its ends .connected together. I prefer the latter construction because it enables the tire lug to be adjusted accurately to the demountable rim.

In the construction shown in Fig.\12, the

overlapping ends of the tire lug Care provided with coperating openings 18 and 19 that vare spaeed'differ'ent distances apart in practically the saine manner as the openings in the adjusting plates 7 and 8, previously described. By inserting' a tool in two of the alining openings'in the overlapping portions of thetire lug and then 'canting said tool, the lug can be expanded-.or adjusted to the Vproper size and a clamping screw 20 can then be inserted in the overlapping portions to securely connect them together. The rim A is, of course, provided'with an elongated slot 21, as shown in Fignl, to receive the tool that is used for adjusting' theI tire lug. One advantage of a tire lug of this description is that it securely clamps the outer casing throughout its entire lengt-h,

and furthermore, it does not interfere with the removal of t-lie demountable rim or arranging said rim in operative position.

From the foregoing it will be seen that a deinountablerim of the construction above ldescribed can be removed easily and arranged in operative position quickly. vIt- Will not rattle because it exerts a yielding clamping pressure on the fixedl rim of they wheel. It cannot be put on improperly owing to the,- fact that the guard plate 9 cannot be arranged in position until the ends of the plates 7 and 8 aline, and as it .comprises only a few parts that are of simple construction, it can be applied with very little trouble, and at a. low cost, to a4 wheel that was originally equipped with a permanent rim. 'j .1

Having thus described my invention, what I claim as new and desireV to secure by Letters Patent is: -V r 1. A wheel provided with a demoun'table vrim 'that fits loosely over the fixed rim whenl it is slipped over. same, projectionson one of said members that tit vin recesses or grooves in the other .member when the demountable rim is slipped over the fixed rim, said demount-able rim being enough larger than the fixed rim thatysaidvprojections canl ride- Out of said grooves and engage the surface of the member in which said grooves are formed when the rims are adj ustedcircumferentially relatively to each other, coperating perforated adjusting plates projecting laterally from said rims, and means coperating with said plates for locking the deinountable rim.

2. A wheel provided with a demountable rim whose circumference is so much greater than the circumference of the fixed rim of the wheel that the demountable. rim Will be spaced away from the major portion of the outer surface of he fixed rim when it is arranged in operative position, ribs on one of said members that enter grooves inA the other member when the demountable rim is slipped over the fixed rim, said ribs lbeingadapted to ride out of said grooves up onto the surface of the member in which they are formed -when the rims are adjustv ed circumfereiitially relatively to each other, independent means for preventing lateral movementof the demountable rim, and perforated members on said rims which are adapted to cooperate with an adjusting tool during the" operation of arranging the deimmutable rim in position.

, ,3. A wheel provided with a deniouiitable -rim that is adapted to be slipped over the fixed rim, transversely extending ribs on one of said members that are adapted to ing laterally from said members and aliningv with each other when the deinountable rim arrives in its adjusted position, and an approximately yoke-shaped member that fits over said devices so as to hold the demount-4 able rim in its adjusted position.

5. A wheel provided with a demountable rim that is adapted to be slipped over the fixed rim and adjusted circumferentially thereof, overlapping plates on said members that aline perfectly when the demount-able rim arrives in its adjusted position, a yokeshaped member that fits over said plates,

I and a fastening device that enters alining openings in said plates.

6. A Wheel provided with a fixed rim, a.

demountable rim that is adapted to be slipped over same, and plates'on said mem bers provided with openings that are adapted to re'ceive an adjusting tool, the openings in one plate being spaced a different distance. apart than the openings in the other plate.

7. A'wheel` comprising a fixed rim and a demountable rim, a member arranged ad-- jacent said fixed rim, said member and demountable rim being provided with cop erating openings that are adapted to re.- ceive an adjusting tool, and the Openings in one of said parts being spaced apart a different distance than the openings inthe other part.

8. A wheel comprising a fixed rim and a l demountable rim, a member arranged adjacent said xed rim, said member and demountable rim' being provided with cop- `erating openings that are adapted to receive'an adjusting tool, the openings-in one `of said parts being spaced apart a different distance than the openings in the other part, and a fastening device adapted to enter two of said openings which aline so as to lock the demountable rim in position.

'9. A wheel comprising afixed rim and a member arranged adjacent same and provided with a row of openings, a deinountable rim provided with a row of openings that are spaced apart aK different distance than the openings in said member, means for holding said -demountable rim out of en* periphery of the fixed rim, and a fastening device that projects into alining openings in said member and demonntable rim.

l0. A wheel comprisingA a fellyl having a perforated adjusting plate, a demountable rim having a coperaing perforated adjust; ing plate, a guard member that is adapted to embrace said plates, a cap arranged in engagement with the felly and providedV .with

'a locking device that projects into alining perforations in saidplates, and means for. retaining said cap in position.

. gagement with the major portion of the 11. A wheel comprising a fixed ri'm, a demountable rim thaty surrounds same, a per.

forated adjusting plate connected to the inner side of said 1demountable rim, a co'- operating perforated adjusting plate ar ranged adjacent to one edge of the fixed rim,

means cooperating with said plates to lock the rims together, and devices arranged between the rims for holding them spaced apa-rt.

In testimony whereof I hereunto aiiix my signature'in the presence of two witnesses, this eighteenth day of January, 1910.

PAUL J. MoCULLOUGI-I.

lVitnesses 4 VELLS L. CHURCH', GEORGE BAKEWELL, 

